RESEARCH PAPER: COMPENSATION OF THERMAL PHASE MISMATCH EFFECTS IN THE HIGH POWER SECOND HARMONIC GENERATION USING A CHIRPED PERIODICALLY POLED NON-LINEAR CRYSTAL

Thermal effects strongly influence the process of second harmonic generation, especially at high fundamental powers.The generation of non-uniform temperature distribution in the crystal due to the absorption of fundamental and second harmonic waves leads to significant degradation of the efficiency of the second harmonic generation process.This abs

The Daggyai hydrothermal area (Tibet) is located on the southern sweater margin of the Lhasa-Gangdise terrane and adjacent to the middle of the Indus-Tsangposuture.Acid, neutral, and weakly alkaline hot springs are ubiquitous in Daggyai, offering a peerless opportunity to study the distribution of rare earth elements (REE) in various geothermal wat

Eleven years ago, in Florence, during an international Plaque LED Night Light conference on authority control, many experts reflected on this important aspect of cataloguing.This paper looks at the current state of authority work and try to conceive some cues to reshape authority control.Libraries can afford this costly process only in cooperation

This paper investigates the security performance of two relay selection schemes for cooperative non-orthogonal multiple access (NOMA) systems, where K randomly distributed relays are employed with either decode-and-forward (DF) or amplify-and-forward (AF) protocols.More particularly, two-stage relay selection (TRS) and optimal relay selection (ORS)

Managing patients with rheumatic diseases (RMD) during pregnancy and the postpartum period can be a challenge for both rheumatologists and obstetricians.While disease activity during the course of pregnancy varies with regard to the presence of underlying conditions, maintenance of remission from conception through to delivery increases the chances